2008 GTI (tsi/cbfa) Cranks but No Start

[usmcpi]

So a few months ago I was trying to pull onto a main road in heavy traffic from a steep incline parking lot exit. Thinking I was in first gear (6mt), I instantly stalled the car. Do the whole remove key, restart car thing and it just cranks. Just turns over until I either turn the key off of or let go of the clutch. I was super low on fuel and trying to get gas next. I thought maybe I had at first starved the pump of fuel and burned it up, especially considering the steep incline. Replaced HPFP, cam follower looked fine. Checked in tank pump by jumping straight from 12v, OB11 function test, and it also spews out plenty of fuel if you pull the feed line off the HPFP. Haven't test fuel past the HPFP, but OB11 is telling me I have ~1000psi at the rail. Physically Checked for spark on plug one by grounding it to block and seeing spark during daylight.

I don't believe my fuel pump primes when i open my drivers door (it has a messed up locking harness issue that had pre-existed many many months). The MFD still displays when the door is open, but I don't hear the pump prime until I turn the key to the "run" position. Also pre-existing is the ESP issue with the steering angle sensor ever since a slight wreck.

I've swapped around relays A1 and A2 in the underhood fuse panel. A1 - Terminal 30 voltage supply relay -J317- (marked w/ 100) seems to get warm to the touch with the keys in the ignition, as does Terminal 30 voltage supply relay 2 -J689- (marked w/ 449).

Basically every dash light is on; epc, cel, battery, esp, etc. Also interesting are the screenshots below...

Fried ECU? Bad Ignition Switch? Bad ECT?

Date: 2018-04-25 16:24

   VIN: WVWGD71K08W309049
   Car: Volkswagen Golf GTI
   Year: 2008
   Body type: 5-dr hatchback
   Engine: CBFA 147 kW (200 HP) 2 l
   Mileage: 263110 KM

---------------------------------------------------------------
01 Engine

   System description: 2.0l R4/4V TFSI
   Software number: 1K0907115AD
   Software version: 0060
   Hardware number: 1K0907115AD
   Serial number: VWX7Z0H23NP8PN
   Long coding: 0403010818070160

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
03 Brakes

   System description: ESP FRONT MK60
   Software number: 1K0907379AC
   Software version: 0101
   Hardware number: 1K0907379AC
   Coding: 0021122

   Trouble codes: 
       01486 - System function test activated
           static
       00778 - Steering angle sensor mechanical malfunction
           static
       00778 - Steering angle sensor no or incorrect basic setting/adaptation
           static


---------------------------------------------------------------
04 Steering Angle Sender

---------------------------------------------------------------
04 Steering Angle Sender

---------------------------------------------------------------
08 Air Conditioning

   System description: Climatic PQ35   142
   Software number: 1K0820047HS
   Software version: 1111
   Hardware number: 1K0820047HS
   Serial number: 00000000000000

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
09 Central Electrics

   System description: Bordnetz-SG     H54
   Software number: 3C0937049AJ
   Software version: 2202
   Hardware number: 3C0937049AJ
   Hardware version: 063
   Serial number: 00000008210130
   Long coding: 078D8F214004150047140000001400000028770B5C000100000000000000

   Subsystems: 
       System description: Wischer 300308 021
       Software number: 1K1955119E
       Software version: 0501
       Coding: 0038805

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
0F Radio Tuner Digital

   System description: SDAR SIRIUS     H07
   Software number: 8E0035593M
   Software version: 0150
   Hardware number: 8E0035593M
   Serial number: AUZ4Z7H0290680
   Coding: 0000000

   Trouble codes: 
       02635 - Tuner not enabled/activated
           static


---------------------------------------------------------------
15 Airbag

   System description: 6K AIRBAG VW8R  034
   Software number: 1K0909605AB
   Software version: 8000
   Hardware number: 1K0909605AB
   Hardware version: 003
   Serial number: 003B6D0AXKW%
   Coding: 0013899

   Subsystems: 
       System description: BF-Gewichtsens. 007
       Software number: 1K0959339G
       Software version: 0007

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
16 Steering Column Electronics

   System description: J0527           752
   Software number: 1K0953549BP
   Software version: 0100
   Hardware number: 1K0953549BP
   Coding: 0002022

   Subsystems: 
       System description: E0221           002
       Software number: XXXXXXXXXXX
       Software version: 0010

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
17 Dash Board

   System description: KOMBIINSTRUMENT VDD
   Software number: 1K6920974A
   Software version: 2216
   Hardware number: 1K6920974A
   Hardware version: 000
   Serial number: VWX7Z0H23NP8PN
   Coding: 0007403

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
19 Gateway

   System description: J533  Gateway   H07
   Software number: 1K0907530L
   Software version: 0052
   Hardware number: 1K0907951
   Hardware version: 000
   Serial number: 240308F2008802
   Long coding: E9817F071013020002

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
1C Vehicle Position Detection

   System description: Kompass         001
   Software number: 1K6919879
   Software version: 0003
   Hardware number: 1K6919879
   Serial number: 1225223T2WTG03

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
25 Immobilizer

   System description: IMMO            VDD
   Software number: 1K6920974A
   Software version: 2216
   Hardware number: 1K6920974A
   Hardware version: 000
   Serial number: VWX7Z0H23NP8PN

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
42 Door Electronics Driver Side

   System description: Tuer-SG         006
   Software number: 1K0959701M
   Software version: 1203
   Hardware number: 1K0959701M
   Coding: 0001205

   Trouble codes: 
       01552 - Driver door central locking LOCK motor Electrical malfunction in circuit
           static


---------------------------------------------------------------
44 Steering Assistance

   System description: EPS_ZFLS Kl.074 H08
   Software number: 1K1909144M
   Software version: 1901

   Trouble codes: 
       00778 - Steering angle sensor
           static


---------------------------------------------------------------
46 Central Module Comfort System

   System description: KSG PQ35 RDK 052
   Software number: 1K0959433CT
   Software version: 0221
   Hardware number: 1K0959433CT
   Hardware version: 008
   Serial number: 00000000000000
   Long coding: 129006885103083F2D04058FB0080F0488DC00

   Subsystems: 
       System description: Sounder n.mounted

       System description: NGS n.mounted

       System description: IRUE n.mounted

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
47 Sound System

   System description: 08K Audioverst.
   Software number: 1K6035456B
   Software version: 0006
   Hardware number: 1K6035456B
   Hardware version: 000
   Serial number: 00000008139598

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
52 Door Electronics Passenger Side

   System description: Tuer-SG         006
   Software number: 1K0959702M
   Software version: 1203
   Hardware number: 1K0959702M
   Coding: 0001204

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
55 Headlight Regulation

   System description: Dynamische LWR
   Software number: 1T0907357
   Software version: 0003
   Coding: 0000003

   Trouble codes: 
       01539 - Headlights were not adjusted no or incorrect basic setting/adaptation
           static


---------------------------------------------------------------
56 Radio

   System description: Radio PM6       019
   Software number: 1K0035180L
   Software version: 0036
   Hardware number: 1K0035180L
   Hardware version: 019
   Serial number: VWZ5Z7H2223650
   Coding: 0010011

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
62 Door Electronics Rear Left

   System description: Tuer-SG         006
   Software number: 1K0959703K
   Software version: 1305
   Hardware number: 1K0959703K
   Coding: 0001168

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
65 Tire Pressure Monitoring

   System description: RDK
   Software number: 1K0959433CT
   Software version: 0450
   Hardware number: 1K0959433CT
   Hardware version: 008
   Serial number: 00000000000000
   Coding: 0100101

   Trouble codes: 
       No trouble codes found

---------------------------------------------------------------
72 Door Electronics Rear Right

   System description: Tuer-SG         006
   Software number: 1K0959704K
   Software version: 1302
   Hardware number: 1K0959704K
   Coding: 0001168

   Trouble codes: 
       No trouble codes found

 

[usmcpi]

Post was too long so here are the images

 

[usmcpi]

Also...

I only recently got the OBD11 after the no-start condition, so I can't confirm any prior DTC's, however, my ESP light had been for the previous 6+ months since when my friend slightly wrecked my car. Nothing I've read has given the slightest indication that the angle sensor could cause a no start either. And if it did, i'm not sure how it would possible to even perform the basic setting since step 1 is to start the vehicle.

Could it be the N75 with the drastic difference of specified vs actual boost pressure...especially when the car is requesting 37psi while the car isn't even started, just ignition on. It realizes the engine speed is 0 RPM yet it thinks it's at 100+%.

It also thinks the fuel temp is -54*...I don't think that has ever happened in the history of Atlanta. I've read that a faulty coolant sensor could cause a no-start. The only problem is that I haven't found any cases of the ECT causing a no-start for being too cold. Everything seems to be the opposite, no start when engine is hot and must wait until it cools off to start.

 

[vwengineer]

I think your reader doesn't show valves that make sense. The boost requested is 3 psi which N75 at 2% (close) so this is normal, but the actual boost is shown at 37 psi?!?

So either your reader doesn't work or you have serious electrical problems. The angle sensor will not prevent the car to start but would explain, steering wheel, CEL and esp lights, battery is normal during startup but epc is not I think.

 

[usmcpi]

Well when most of the other stuff looks correct, it's odd that marginally few appear to be way out of whack. I'd say that's a strong correlation to why it doesn't start.

 

[GTI's]

Try to find someone with Vcds to perform an Auto Scan, save that scan and clear codes try and to start engine perform another scan and save it and post.

 

[usmcpi]

What is the difference between the VCDS scan and the OBD11 scan that I posted?

When I clear the codes from my OBD11 scan, the only ones that stay after clearing are the steering angle sensor and headlight regulation. If I try to start the car and rescan, I'm back to the scan of what I originally posted.

 

[vwengineer]

Well your ODB11 does not display the actual fuel pressure, only the specified (the expected one). Or maybe it displays it in "engine torque" ? If so then your fuel pump is shot, either the HPFP or the LPFP. To know you would have to look at both LPFP and HPFP fuel pressures "actual" vs "specified".

 

[usmcpi]

As I stated,

Checked in tank pump by jumping straight from 12v, OB11 function test, and it also spews out plenty of fuel if you pull the feed line off the HPFP. Haven't test fuel past the HPFP, but OB11 is telling me I have ~1000psi at the rail.

 

[vwengineer]

Ok, sorry I read that but you put the screenshot of the specified pressure and as you stated that the "actual" boost of 37 psi was the requested boost I thought you got it wrong on the fuel pressure as well.

Then it's probably something else, a vacuum leak can prevent the car to start, I had the issue with a stuck open N80. It still started but not every time. Did you check vacuum? N80, PCV?

 

[usmcpi]

Oh I see now, yeah, I meant to put it's requesting 3psi but shows as getting 37. I feel that's even worse than how I accidentally worded it...the car isn't even on. How does the car THINK it's receiving 37psi when it's actually receiving 0...?

What and how should I test from here?

 

[vwengineer]

It's normal for the pressures not to match as long as the car isn't in boost. Actual pressure shows atmospheric pressure while requested shows a vacuum if not in boost. Even if it's a bit strange that's the way this measuring block works. But 37 psi is strange.

 

[usmcpi]

I would think the sensor/ecu would be tared for atmospheric pressure? As in the standard ~14ish psi is set to 0psi. Regardless, 37psi is ~2.5x what it should show if not tared...

Anyone with vcds/obd11 wanna go look at live data for this with ignition on/engine off?

 

[GTI's]

I would think the sensor/ecu would be tared for atmospheric pressure? As in the standard ~14ish psi is set to 0psi. Regardless, 37psi is ~2.5x what it should show if not tared...

Anyone with vcds/obd11 wanna go look at live data for this with ignition on/engine off?

It will show atmospheric pressure or about 1000mbar with engine not running rpm showing zero.

 

[vwengineer]

I would think the sensor/ecu would be tared for atmospheric pressure? As in the standard ~14ish psi is set to 0psi. Regardless, 37psi is ~2.5x what it should show if not tared...

Anyone with vcds/obd11 wanna go look at live data for this with ignition on/engine off?

I have done it already with VCDS, for some reason that block doesn't show vacuum even with engine running, the minimum value is atmospheric pressure. The specified value on the other hand shows vacuum. Under boost both show atmospheric pressure + boost pressure combined. At least on the FSI engine.

Exemple here (not my video): https://youtu.be/mDBGseqfC5Y